Combination locking switch-stand.



1. -w. WALLS. COMBINATION LOCKING SWITCH STAND. APPLlCATiON FILED SEPT. 10. H3.

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45 parts in the several figures of the drawings.

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JAMES W. WALLSpOF PUEBLO, G O ZCORAD O,

COMBINATION ooxrne swIroH-srAnn.

Specification of Letters Patent Application filed September 10, 1913. Serial No. 789,127.

. To all whom it may concern:

Be it known that I, JAMEs W. WALLS, a citizen of the United States, residing at Pueblo, in the county of Pueblo and State of Colorado, have invented certain new and useful Improvements in Combination Lock ing Switch-Stands, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to switch stands and has for its object the provision of a combination interlocking switch stand in which the operating lever will be automatically locked when the switch is thrown by the downward movement thereof.

Another object of the invention is to pro vide a switch stand in which the switch rod is operated by a bell crank through the medium of a reciprocating rod mounted vertically within the stand and moved by the operating lever in order to throw the switch.

A still further object of the invention is to provide a novel form of lock for the switch i lever which is so constructed that when the lever is thrown in a downward 7 position, the operating arm thereof will be :of the upper portion of the stand with parts removed; and Fig. 4, is a section taken'on the line of F ig. 3.

Like numerals of reference refer to like In the drawings, 1 indicates a skeleton stand comprising a base 2 having legs 3 connected at their upper ends to a plate -ZL forming a support for a head 5] whlch 1s "in the form of a Casting; saidcasting being vprovided with a vertical opening in alinevinent with a Centrally depend ng tubular por ion 6.033 16 pla Fthr h h h tends vajtube. 7 mount d t its lower end In Secured to the lower end portion of the tube 7 is a, crank 8 which is provided with the ordinary means forconneoting the same to the switch rod.

I The legs 3 of the stand 1 are preferably arranged in pairs, as shown in the side elevation, and diverge at their lower ends b tween which is pivot-ally mounted a, bell crank 9; one arm' of which is bifurcated as PatentedOct. 23, 1917.

shown at 10in which is pivotally mounted a switch locking rodclla The other arm of the bell crank is provided with a yoke 12 embracing a grooved sleeve 13 slidably mounted upon the tube 7; the arms of said yoke being provided with pins 14 extending into the groove and forming amovable connection. a

Slidably mounted within the tube 7 .is a rod 15 having a transverse pin 16arranged therein adjacent. its lower end which extends out throughoppositely. disposed slots 17 formed in the tube 7; the outer portions of which are secured in the collar l31as clearly shown in Fig. 1, in order 'to form a connection between the collar 13 and the rod. By connecting the rod to the collar inthis manner, as the rod is reciprocated in the tube 7, the sleeve will be carried with it in order to oscillate the bell crank so as to reciprocate the switch lock rod 7 inorder to release and lock the-switch, and .while 'I'have not illustrated a switch. used in connection with this stand, it is of course understood that the connecting rod 11 is con,-

nected to the locking device of the switch in the ordinary manner.- The casing 5 is provided with an enlarge port on 18 having a 'slot' formed therein in which is pivotally mounted a switch lever 19 upon a pivot pin 20; said. switch lever bein rovided with an extension formin b an arm 21 having a rounded. end .22 which extends througha .slot 23 formed in the tube and is adapted to be seated within a recess 24 formed in the rod 15 inorder to form a connection between the arm and rod in such a manner that when the lever 19 is raised, the rod will be forced downwardly so asto operate the switch locking device.

The lever 19 is held from turning when .in its, lowered position by forming a notch 2.5 inthe plate/ 1 into which the lever fits,

asclearlyshown. The casing 5 is provided with a pivoted springeactuated bolt 26 notched as shown at 2.7 to embrace the arm 21, of. the lever l9 in order to. prevent the Lain lever from being raised until the movable bolt is swung out of the path ofthe arm, as will be later described.

A key hole 28 is formed in the casting 5 in which is arranged an eye pin 29 adapted to receive the tubular stem of a key which is provided with the usual form of bit adapted to engage a pin 30 formed on the movable bolt 26 so that when a key is in position therein andis turned upon the eye pin, the bolt will be swung out of the path of the arm 21 of the lever 19 in order to allow the rod to be moved downwardly to release the locking device.

From the foregoing description it will be seen that the movable bolt is pivotally mounted upon the eye pin 29 which forms a guide for the key and that the bolt is provided with a spring which normally holds the same in an extended position, which bolt is of such a shape that it will ride over the arm of the switch lever as the lever moves by it in the downward movement of the lever and the upward movement of the arm so that when the switch lever is thrown back into its normal position, the extended arm thereof will be embraced by the movable bolt in such a manner that it will be prevented from moving in any way; making it necessary to swing the bolt out of the path of the arm through the medium of a key.

WVhile I have not shown the form of key used in connection with this look, it is of course understood that a tubular stem key is employed with a bit of such a size that it will engage the pin 30 carried by the bolt so as to swing the bolt upon its pivot out of the path of the extended arm, and by lifting the switch lever upwardly, the extended arm will force the rod 15 downwardly. The end of the bolt will engage the side of the extended arm so that when the lever is being swung back into its original position, it will ride over the arm into the position shown in Fig. 3 and securely lock the lever.

In the drawing, I have shown a switch stand without the semaphore attachment, but it is of course understood that any suitable form of signal device can be used in connection with the stand and connected in such a manner that the semaphore will be operated.

I claim:

l. A combination switch stand, comprising a base having a skeleton portion terminating in a plate provided with notches, of a head mounted upon said plate, a vertically disposed tube extending through said head and plate having a bearing in the base of said stand, said tube being provided with oppositely disposed slots, a plunger working in said tube, a sleeve mounted upon said tube having a connection with said plunger through said slots, a bell crank having a connection with said sleeve, a crank arm fixed on said tube, and a lever for independ- "ently operating the crank arm of the tube and the bell crank connected to the plunger.

2. In a switch stand, a vertically movable switch lever having an extension, a rod operated by said extension, a movable bolt arranged to intersect the path of travel of said extension, and a key for moving said bolt out of the path of travel of said extension.

3. A switch stand having a base provided with legs, a plate carried by said legs, a head mounted upon said plate provided with notches, a rod mounted in said head, a pivoted lever, an extension formed on said lever having a sliding connection with said rod, and a spring-actuated bolt arranged to intersect the path of travel of said extension for locking said lever.

4. A switch stand, comprising a base having legs mounted thereon, a plate carried by said legs provided with a tubular portion, a head mounted upon said plate, a tube extending through said head and tubular portion and revolubly mounted in the latter, a plunger slidably mounted in said tube, a bell crank having a connection with said plunger, a switch locking rod having a connection with said bell crank, and a switch operating device operatively connected to said revoluble tube. V

5. A switch stand having a head in the form of a casting, a switch lever mounted upon said casting having an extension, a vertical rod having an opening to receive said extension, a notched spring-actuated bolt arranged within said casting adapted to embrace said extension, a bell crank operated by said rod, and a switch locking device connecting rod connected to said bell crank.

6. A switch stand having a vertically arranged tube provided with a slotted portion, a sleeve mounted on said tube, a rod slidably mounted within said tube having pins ex tending through said slot connected to said sleeve, a switch lever operatively connected to said rod, and a bell crank operatively con nected to said sleeve having a switch lookin device connecting rod connected thereto.

A switch stand having a vertically reciprocating rod, a bell crank operatedby said rod mounted upon a horizontal pivot, a switch rod connected to said crank, a switch lever having a connection with said rod, and a pivoted spring-actuated bolt mounted in a plane at right angles to said switch lever and adapted to intersect the path of travel of said lever.

8. A switch stand having a movable operating rod, a bell crank having a connection with said rod, a switch lever for operating said rod, a notched spring-actuated bolt mounted in a plane at right angles to said switch lever and adapted to embrace said switch lever when in lowered position, and

means for moving said bolt out of the path of said lever.

9. A switch stand comprising a base having legs extending therefrom provided with a plate at their upper end, said legs being arranged in pairs and diverging at their lower ends, a head arranged upon said plate, a tube extending through said head mounted upon said base, a bell crank mounted between one pair of legs, a sleeve slidably mounted upon said tube operatively connected to one arm of said bell crank, a rod mounted in said tube having a connection with said sleeve, said rod being provided with a recess, a switch lever having an extension extending into said recess, and a movable bolt arranged in the path of travel of said extension.

10. A combination locking switch stand having a vertically movable switch lever provided with an extension, a notched pivotally mounted spring-actuated bolt arranged to intersect the path of travel of said extension, and a key for actuating said bolt.

11. In a switch stand, the combination with a switch lever having an extension, of

mechanism operated by the extension for reciprocating said rod, a pivoted key-controlled spring-actuated notched bolt mounted in a plane at right angles to said lever, and adapted to embrace said extension when said switch lever is in lowered position, and means for moving said bolt out of the path of travel of said extension.

12. A'switch' stand having a head provided with a key hole, an eye pin, a springactuated bolt pivotally mounted upon said eye pin provided with a notch, a lever provided with an extension adapted to be embraced by said notch, a pin carried by said bolt, a key adapted to embrace said pin for moving said bolt out of the path of said extension, a rod reciprocated by said extension, and mechanism operated by said rod for operating a switch locking device.

In testimony whereof I aflix my signature in presence of two witnesses.

JAMES W. WALLS.

Witnesses: W. E. VANsYoo, C. W. PARKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

